*{
  margin: 0;
  padding: 0;
}
ul{
  list-style: none;
}
body{
  background-image: linear-gradient(90deg,#affff3,#18aca5);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 600px;
}

fieldset {
  width: 530px;
}